#container{
    margin: auto;
    margin-top: 150px;
    padding: 20px 50px;
    background-color: #000000;
    opacity: 0.7;
    width: 400px;
    height: 300px;
    border-radius: 10px;
    text-align: left;
}
#sp{
    color: red;
    font-size: 16px;
}
body{
    margin: 0;
    padding: 0%;
    background-image: url(../css/picture.jpg);
    background-size: cover;
}

#container .form-group .form-control{
    margin-top: 20px;
}
#container .form-group{
    margin-top: 50px;
}

.btn{
    border: 0;
    margin-top: 0px;
    width: 200px;
    height: 40px;
    color: #ffffff;
    border-radius: 20px;
    background-blend-mode: multiply,multiply;
    background:orange;
}
.form-group input{
    border: 0;
    margin-top: 15px;
    width: 400;
    height: 40px;
    color:black;
    border-radius: 20px;
    background:skyblue;
    background-blend-mode: multiply;
}